Why are these plots different?

I understand why the xlabel is different, but I don't understand why the image is different, while structurally appearing the same. I'm using a uniform time step for my algorithm (h = 0.01). t,z are both 22401x1 doubles. plot(z) leads to the first image, plot(t,z) leads to the second.

Answer 1

[Jan]

The diagrams are different, because the scaling differs. This is exactly what is expected, when you define the x component of the data or omit this information. Therefore it is not clear, what your question is. You draw two different things, then you can expected, that they look different. To get the same output, you can equalize the scaling and limits:

subplot(1,2,1);
plot(z)
axis tight

subplot(1,2,2);
plot(t,z)
axis tight

[Zachary Duff]

No, this wasn't the case, it happened because of a rounding error in my stepsize variable. The output data in the lower plot was misaligned with its input variable.